| Brand | DOLD |
|---|---|
| Housing width | 90 mm |
| Approvals | UL |
| Enclosure design | Switch cabinet |
| Order number | 0065331 |
You are here:
DOLD LK 5894 – Insulation monitor
- Brand
- DOLD
- Part number
- LK 5894
- Order number
- 0065331
Insulation monitor
- Preventive fire and system protection
- Quick fault localisation through selective earth fault detection to L+ and L-
- Universal application in non-earthed AC, DC, AC/DC networks with up to 690 V nominal voltage
- Suitable for large leakage capacitances up to 1000 μF
- Simplest setting via engaging rotary switches
Download datasheet (PDF)Ask an engineer
Price and lead time on request — add this part to your quote list and we will reply with pricing and availability.
The insulation monitor LK 5894 of the VARIMETER IMD family is a solution for optimal insulation monitoring of modern IT systems.The device can be used in the most flexible way for AC, DC and AC/DC systems even with large leakage capacity to earth (PE). The adjustment of the setting values is simple and user friendly done on 2 rotary switches on the front of the device. Via LEDs the measured value, device parameters and device status are indicated easy to read.
Features
- Insulation monitoring according to IEC/EN 61557-8
- Detection of symmetric and asymmetric insulation faults
- 2 changeover contacts
- Prewarning threshold setting range: 20 kΩ … 2 MΩ
- Alarm threshold setting range: 1 kΩ … 250 kΩ
- Energized or de-energized on trip can be selected for output relay
- Setting the maximum leakage capacitance to shorten the response time
- Simple, clearly arranged adjustment of the device with screwdriver
- LED chain to indicate the current insulation resistance
- Display of active measuring circuits
- Automatic and manual device self-test
- Width: 90 mm
Technical specifications
| Approvals | UL |
|---|---|
| Auxiliary voltage | DC |
| Connection for indicator | Yes |
| Earth fault indicator | Yes |
| Enclosure design | Switch cabinet |
| IMD type | AC, AC/DC, DC |
| Nominal voltage IT system | AC 0 – 690 V, DC 0 – 690 V |
| Response value | 1 – 250 kΩ |
| Response value type | Adjustable |
| Width | 90 mm |
| Type | LK 5894 |
Available variants
| Alarm value | 1 – 250 kOhm |
|---|---|
| Auxiliary voltage | DC 24 V |
| Contact equipping | 2 x 1 changeover contact |
| Prewarning value | 5 – 500 kOhm · 20 kOhm – 2 MOhm |
| Approvals and Markings | UL-listed C/US, UKCA |
| Variant | Without wire-break detection at L(+)/L(-) · Without wire-break detection at L(+)/L(-). Fixed function de-energised on trip, the relays react immediately after connection of auxiliary voltage · With wire-break detection at L(+)/L(-) · With wire-break detection at L(+)/L(-). Fixed function de-energised on trip, the relays react immediately after connection of auxiliary voltage · With wire-break detection at L(+)/L(-). Measuring voltage approx. +/- 45 V |
Tell us the variant you need in your quote request.
